Between Knotts and Disney, we're spending about 5 days in the parks. At $30 a pop (Or is Disney now $40? I've gotten conflicting info), thats $150 plus the daily deposits charged. On top of that, If I start at DL and then cut accross to CA, I'm NOT optomistic that they'll still have any ECVs left for the day.
Alans starts at under $100 for the week. (Although they're recommending a heavy-duty ECV that is $130 for park touring.) and I can take it everywhere.
Someone who hasn't used Alan's on the disABILITIES board suggested the higher cost ECV isn't needed. (The main focus on disABILITIES is on WDW.)
I've been hoping that someone else here has used them and can give a thumbs up/down.